Lock.



J. CHEIN.

LOCK.

APPLICATION FILED MAR. 7. 1916.

Patented Dec. 26, 1916.

A wvewfoz cylindrical aperture in the door 10.

the central section 9 I provide a key slot JULIUS CHEIN, OF MONTCLAIR, NEW JERSEY.

LOCK.

Specification of Letters Patent.

Patented nee. as, rare.

Application filed March 7, 1916. Serial No. 82,594.

b all whom it may concern Be it known that I, JULIUS CHEIN, a citizen of the United States, and resident of Montclair, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements inLocks, of which the following is a specification.

My invention relates to improvements in locks, and the object of my invention is to provide a simple and convenient lock for doors and the like. I accomplish this object by the device illustrated in the accompanying drawings, in which Figure 1 is a view of the inner section of the case and the bolt. Fig. 2 is a view of the upper section of the case. Fig. 3 is a view of a door provided with my improved lock. Fig. 4 is a section of the same on line 4-4 in Fig. 3, and Fig. 5 is a section of the same on the line 5-5 in Fig. 4.

Similar characters refer to similar parts throughout the several views.

My improved lock is particularly adapted for use in toy safes and the like, and is contained in a flat cylindrical case 1, in which I provide a bolt 2 resting in the out out guides 3 and 4 in the bent up edge section 5 of the case 1. Intermediate the ends of the bolt 2 I provide a wide central section 6 in which is a cut out key aperture 7. A

cover plate 8 is provided, having a raised central section 9 adapted to be seated inIa n 11. In the marginal section of the cover plate 8 adjacent the ends of the key slot 11, I provide two bosses 12 and 13 which act as stops to engage the key aperture 7 of the bolt 2 at its retracted and projected positions respectively.

I prefer to use with my improved look, a flat key 14, having two bits 15 and 16. Centrally positioned in the case 1, I provide a key centering perforation 17 adapted to receive the end section 14 of the key 14.

The bolt 2 is supported above the bot- .tom or wall of the case 1 by the bent up edge section 5 of the case l'below the cut out guides 3 and 4, and at a height sufficient to permit the bit 15 of the key 14 to turn freely below the bolt on one side of the key aperture 7 which is cut away at 17 to permit the movement of the bolt. On one side of the key aperture 7 I provide a cut out notch 18. A section 19 of the bolt 2 provided with notch 18 is bent downwardly to lie in the plane of the bits 15 and 16 of the key 14.

The bolt 2 asabove described being seated in the case 1, the cover plate 8 is placed thereon and the device inserted in a door 10 and may be secured thereon by driving the ears 20, 21 through the door 10 and bending them over on the outer side, or in any other desired manner. The device being thus assembled, a key 14 is inserted in the key slot 11 of the lock. The end section 14 of the key will rest in the key centering perforation 17. The turning of the key 14 in either direction will cause a bit 15 or 16 of the key 14 to engage one of the shoulders of the notch 18 of the bolt 2 thereby throwing the bolt 2 to a retracted or projected position, in which positions one or the other of the bosses 12 or 13 will rest in the end of the key aperture 7 and thereby hold the bolt against accidental displacement.

It is apparent that the bosses 12 and 13 are in position to register with the elongated terminals or slot-like portions of the keyaperture 7, and when the cover plate is turned in the operation of the key to either move the bolt to looking or retracted position, a particular boss, as 12 or 13, rides into said slot-like terminal of the aperture 7 and temporarily restrains the bolt from movement in either direction.

Having thus described my invention what I claim is 1. In a device of the character described, a case, a bolt therein provided with a key aperture, a rotatable cover formed with a boss adapted to engage the key aperture of the bolt to prevent accidental displacement substantially as shown and described.

2. In a device of the character described, a case, a bolt therein provided with a key aperture, a cover plate rotatable in the movement of the key and bosses in the cover plate adapted to engage the key aperture of the bolt to prevent accidental displacement substantially as shown and described.

3. In a device of the character described, a case, a bolt therein provided with a key aperture, 2. downwardly bent notched section adjacent the key aperture ferming and State of I New Jersey, this 21st day of shoulders adapted to engage a key and a ebruary, D. 1916.

cover plate to be turned by the key and having an offset adapted to engage the bolt to JULIUS CHEIN' 5 prevent accidental displacement substan- Witnesses tially as shown and described. W. C. PEARSON,

' Signed at Newark, in the county of Esse L. H. BROWN.

Copies of this patent may be obtained for five cents each, by addressing the Commissionei' of 'P a tents:

Washington, D. 0. 

